Single most versatile guitar motif that you need to know (works in both major and minor keys)

If you're an intermediate guitar player I know you listen to music all the time. And I know you listen to great music.

This versatile guitar motif is so cool and catchy, it has been used by famous guitar players repeatedly throughout the last 50 years.

Once I point it out I'm pretty sure you'll say "Hey, I've heard that used in.... [insert song here]".

Best of all it works in both a major and minor context. So let's get to it.